Artificial-light printing-machine.



E. J. BROGAN. ARTIFICIAL LIGHT PRINTING MACHINE. APPLICATION FILED JAN.24.1911.

3 SHEETSSHEET 1.

ATTORNEYS E. J. BROGAN.

ARTIFICIAL LIGHT PRINTING MACHINE.

APPLICATION FILED JAN.24,1911.

1,065,210, Patented June 17,1913. 'y

3 SHEETS-$311531 2.

ATTORNEYS E. J. BROGAN.

ARTIFICIAL LIGHT PRINTING MACHINE. APPLICATION FILED 11mm, 1911.

1,065,210, Patented June 17, 19'1-3.-

3 SHEETSSHEBI 3.

ATTORNEYS U IT D STATES PATENT OFFEQE.

EDWARD JOHN BROGAN, or YONKERS, NEW YORK, AssIeNoR or ONE-THIRD TO 'JoIiN n. REILLY, or. YONKERS, NEW YORK. Y

ARTIFICIAL-LIGHT PRINTING-MACHINE.

sp c of Letters P n Patented June 1'7, 1913.

. hpplication filed January 24, 1911. Seria'1No.604,330.

I To aZZ whom it mayfconoem:

Be itknown that I, EDWARD JOHN -BRO GAN, a citizen of the United States, and a resident of Yonkers, in the county of Westchester and State of New York, have invented a new and Improved Artificial Light Printing-Machine, of which the following is .finally separate the sheets of tracing paper and the exposed sensitive paper for removal from the'machine.

For the purpose mentioned use 7 a transparent plate, on one. side of which is arranged a source of artificial light and on the other side of the plate is arranged a traveling pressure device for holding the superimposed sheets of tracing paper'and sensitive'paper in contact with the surface 7 .of the glass plate. p I

A practical embodiment of the invention is re resented in the accom anyin -drawingsiforming a part of this specification, in which similar characters ofireference indi- .cate corresponding parts in all the views.

- Figure 1 is a side elevation of the printing machine, parts being broken .out; Fig. 2 is an end elevation of the same, parts being in section; and Fig. 3 is a sectional plan viewof. the machine on the line '3.-3 of Fig. 1 and showing more particularlythe adjust: able driving mechanism.

on a suitably constructed frame A are arranged the longitudinally-extending beams B and B, located one above the other, andcarrying at their opposite faceslamp sockets B B? for the reception of electric lamps C, C, .of any approved construction, L'The frame A is also provided with supports D. for carrying an electric lamp E, preferably of the Cooper-Hewitt mercury vapor lamp type, the said lamp E extending between the rows of lamps C and C, as will be readily .understood by-reference to Figs. 1 and 2.

"On opposite sides of the lampsC, C and E is made ofis to be made on the sensitive sheet of paper- H. The superimposed sheets G and H are pressed in contact with the corresponding outer .face of a glass plate F bythe use of an endless traveling apron or a belt I passing over atop roller 1, a bottom roller 1 and an intermediate or a tightening-roller 1 of whichthe rollers I and I are journaled in suitable bearings arranged on the frame A, whilethe roller'l is journaledin ad ustable bearlngs I mounted to slide on the frame A by the use of screwrods I or other suitable means, tocausethe roller 1 to keep. the apron I atall times under the .proper tension.

portions of the'corresponding' plate F, so

that the superimposed sheets G and If are pressed in firm contact by the apron I with reference toFig. 2 it vvill be noticed that the vtop and bottom rollers I and-(I I are, located close to the 'upperand lower.

the corresponding glass plat'e F, The sheet of sensitive paper H isi'n the form of a roll H contained in a light pro'of box J mountled on the frame A, the box having a slit H for the passage'of the sheets from-thebox .J onto the apron I adjacent to the upper roll-er I. The sheet of tracing paperG is passed onto the sheet H at the roller. I, so

that the two superimposed' sheets pass to-' gether between the plate F and the inner run of the apron-I. \Vhen the superimposed sheets leave the plate F and apron I at the .lower roller-If, then the-exposed sheet of sensitive paper H winds -up on a winding up roller K, journaled on the mam frame- A, and the'sheet of tracing paper G after it is separated from the exposed sheet. H. idrops'into a box Gr onthe main-frame AI Now in order to impart a traveling motion tofeaeh' of the endless aprons I and the corresponding superimposed sheets G and .H, the rollers I and K are driven, and for this purpose the following arrangement is made at each end of the frame: As stated the rolls l and K are geared together so that ordinarily some increase in size of the take-up roll I; might result during the operation of the apparatus, but it is obvious that at the beginning of the operation the roll K will turn too slowly to take up all of the film or sensitive sheet supplied thereto, so that the winding of the film or sensitive sheet on the said roll at such a time will be very loose or slack, and all portions of the film or sheet will remain unwound. Then as the size of the roll K increasesfrom the ac cumulation of film or sensitive sheet thereon, there will be a compensation between the slack winding at the initiation of the operation, and greater winding toward the close of the operation, which will act automatically to compensate for the varying size of the roll K resulting from the winding of the film or sensitive sheet thereon. Where the construction or condition of the film or sensitivesheetjs such that this automatic com pensation does not operate satisfactorily, an auxiliary compensating means, such as usually employed, and which forms no part of the present invention, may be utilized to compensate for the varying winding of the film upon the roll K. The shafts I and H of the rollers I and K are provided with gear wheels L and L, in mesh with each other, and on the shaft I is also secured a pulley N, over which passes a belt N passing over a pulley h mounted to turn on a stud N supported on the frame A. On the pulley N is secured a worm wheel 0 in mesh with a. worm O fastened to a transversely-extending shaltjournaled in suit able bearings arranged on the main frame A. On the shaft 0 is secured a pulley P,-

over which passes a belt P also passing over a .pulley P secured on a shaft P ournaled .in suitable bearings arranged on a framework A supported on the lower portion of the main frame A. The face of the pulley l is in contact with a friction pinion Q secured on one end of a shaft Q mounted to slide longitudinally in suitable bearings arranged on l'liQ'fI'ZLHlOWOI'k A, and the said friction pulley Q is also in contact with one face of pulley R, connected bya belt R with a pulley R secured to the shaft S t" a motor S, of any approved construction. The drivinggears described for the two of rollers I and K are preferably located on opposite ends of the main frame-A, as will be readily understood by reference to the drawings, thearrangement being such that the friction pinions Q; are in frictional con tact withthe opposite faces of the pulley R driven from the motor S, so that the rotary motion of the motor is transmitted by the pulley R to the friction pinions Q, which in turn rotate the pulleys P driving the shafts O which in turn impart rotary motion to the shafts I by the gearing described and shown, to cause simultaneous rotation of the rollers l and K, with a view to impart traveling motion to the aprons l and :winding up rollers K to wind up the exposed sheets of sensitive paper H The shafts l are pre sed on by springs l coiled on the shafts and resting with one end on a. framework A and pressing with the other end against a collar P on the shaft P Each of the shafts Q is under the control of an operator standing on the corresponding side of the machine to impart a sliding movement to the shaft Q to shift thc friction pinion Q relative to the pulleys t and P", to vary the speed according to the nature of the superimposed sheets G and H and the strength of the light emanating from the lamps C, C and to expose the sen-.

sitive paper a longer or a shorter period of time to the actinic rays emanating from the lamps C, C and E. v

In order to shift the shafts Q, each is provided with a shifting collar T, pivotally connected with a hand lever 'l" fulcrumed at T on the framework A, the outer end of the hand lever T extenoing to the cor responding side of the main frame A, soas to be within convenient reach of the operator in charge of the particular side of the machine. As the rollers and K are geared together they rotate in unison so that the apron I and the sheet H travel at the same speed, it being understood that owing to the pressure of the apron I on the sheet ll the other sheet G is caused to travel along, to finally drop into the box G, from which the sheet of tracing paper. (l may be removed after the exposure has been vmade.

The electric lamps C, C and E are connected with a suitable source of electricity. which may be in the form of a storage battcry U, supported on the top of the frame .3, as indicated in the drawings.

In running the machine two sets of superimposed sheets G- and ll. may be run simultaneously through the machine under the guidance of two attendants controlling the levers T for the purpose of reg lating the speed of the superimposed sheets as previously explained. L

the arrangement shown and described, the superimposed sheets it and it are held firmly stretched over the correspomliug plate i by the action of (h: apron l, and a continuous traveling motion is given to the siumrnnposcd sheets and the apron l at a desired-speed toinsuro proper erposurc of p the sensitive sheet to the etion of the actinic rays emanatingfrom the lamps C, U E, and which rays pasi'hrough the g as. platel and the tracing p L or G to cause the exposure on the sheet ll. It will henot-iced that by the use of inc machine long sheets of tracing paper, having drawings of profiles, maps and the like th'erepn, can be readily run through the machine for making exposures on a sensitive sheet of paper H of a corresponding length. It will also be noticed that in case duplicate prints are to be made,'one end of the sheet G can be removed from the box G and fed between the sheet H and the plate F at the roller I, to pass the sheet-G a second time through the machine with another portion of the sheet of sensitive paper H.

It is understood that by the combined action of the centrally arranged mercury vapor lamp E and the ordinary electric lamps C, C, a powerful source oflight is provided capable of producing the desired action on the sensitive paper H, as the latter with the tracing superimposed thereon is moved over the glass plate F. It will also be noticed that by curving the glass plate F as shown, the superimposed sheets G and H are held properly stretched and held 'in firm contact one with the other during the travel of the sheets (i and It over the glass plate F, and hence the minutest details of the drawing on the tracing paper is brought out in the final blue print.

Having thus described my -invention, I claim as new and desire to secure by Letters Patent:

1. An artificial light printing machine, comprising a source of artificial light, a transparent plate arranged vertically adjacent to the source of light, a single traveling apron for pressing the superimposed sheets of tracing and sensitive paper in contact with the plate, rollers arranged one above the other and over which passes the apron. a winding up roller arranged below the lower apron roller for the exposed sheet of sensitive paper, a motor, means for operating one of the apron rollers from the motor, means for operating the winding up roller from one of the apron rollers, and a speed controlling device for the apron roller operating means.

2. An artificial light printing machine, comprising a source of artificial light, a vertically arranged transparent plate adjacent the said source of artificial light, a single endless traveling apron for pressing the superimposed sheets of tracing paper and sensitive paper in contact with the plate at the other side of the artificial light, rollers arranged one above the other and over which passes the said apron, means for rotating one of the rollers to impart a traveling motion to the said apron, a winding up roller below the lower apron roller for the exposed sheet of sensitive paper, a receptacle below the winding up roller for theisheeta of tracing paper to drop in, and means for impart-- ing rotary motion to the said winding up roller from one of the apron rollers.

3. An artificial light printing nittchige,

comprising a frame, electric lamps mounted thereon, outwardly curved glassplates arranged vertically on opposite sides of the said lamps for the superimposed sheets of tracing paper and sensitive paper to pass over the outer face of each glass plate, a single endless apron adjacent the outside of each glass plate, a set of rollers j ournaled in the frame adjacent to each glass plate and over which passes an endless apron to press the corresponding superimposed sheets in contact with the adjacent glass plate, a winding up roller below a roller of each set of-rollers for the exposed sensitive sheet to wind on, a motor, a'shaft at each end of the. frame, means for operating the shafts from the motor, means for operating one of the apron rollers from each shaft, and means for operating the winding up rollers from one of the apron rollers of each set.

4. An artificial light printing machine,

comprising a frame; electric lamps mounted thereon, outwardly curved glass plates arranged vertically on opposite sides of the said lamps for the superimposed sheets of tracing paper and sensitive paper to pass.

over the outer face of each glass plate, a single endless apron adjacent the outside of each-glass plate, a set of rollers journaled in the frame adjacent to each glass plate and over which passes an endless apron to press thecorresponding superimposed sheets in contact with the adjacent glass plate, a box for containing a roll of sensitive paper arranged adjacent to the upper roller of each set of rollers and having an outlet slit leading to the corresponding apron, a winding up roller below the low er roller of each set of rollers for the exposed sensitive sheet to wind on, a driving gear for driving the said apron rollers, and gearing between the winding up rollers and one of the apron rollers.

In an artificial light printing machine, a frame, a transparent plate, a-source of artificial light adjacent to the plate, rollers mounted in the frame at one side of the pl ate, an apron on said rollers, a winding up roller for the exposed sensitive paper, mounted in the frame adjacent one of the apron rollers and geared therewith, a shaft mounted in the frame, means for operating one of the apron rollers from the shaft, a motor, and means forv operating the shaft from the. motor, said means including a speed governing device.

(S. In an artificial light printing machine,

a frame, a transparent plate,a source of artificial light adjacent to the plate, rollers mounted in the frame at one side of the late, an apron on the rollers, a winding up roller for the exposed sensitive paper provided with a pulley and geared wit-h one of the apron rollers, a pulley mounted in the frame and carrying a WOIHI Wheel, a belt In tesfilnony hereqf I have signed 11'1" passing around said pulleys, a shaft inountname to this specification in the presence 01 ed in the frame and provided with a worm two subscribing Witnesses.

meshing with the said worin'wheel, a motor EDKVARD JOHN BROGAN; and means for operating'the said shaft from Witnesses: v 1 (he niotm', said means including a speed THEO. G. Hos'rnn,

governing device. PHILIP D. ROLLHAUS.

Copies oi this patent may be obtained for. five cents each, by addressing the Commissioner of Patents.

'\Ffashington, D. C. 

